CN105127441B - A kind of preparation method of platinum nano microcrystalline dispersion - Google Patents
A kind of preparation method of platinum nano microcrystalline dispersion Download PDFInfo
- Publication number
- CN105127441B CN105127441B CN201510504507.5A CN201510504507A CN105127441B CN 105127441 B CN105127441 B CN 105127441B CN 201510504507 A CN201510504507 A CN 201510504507A CN 105127441 B CN105127441 B CN 105127441B
- Authority
- CN
- China
- Prior art keywords
- platinum
- solution
- precursor solution
- nano microcrystalline
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The present invention relates to a kind of preparation method of platinum nano microcrystalline dispersion, belong to field of nanometer technology.It is of the present invention to add any dispersant, adjust the pH value of platinum precursor solution, toward addition platinum precursor solution in reactor under the conditions of stationary temperature, disposably add reducing agent rapidly again, the color change situation of reaction solution can be observed in certain time, brown is become by transparent yellowish-brown, then becomes opaque black.Supernatant is discarded under the action of the centrifugal, is then continuously washed, centrifuged with deionized water, and circulation is at least three times.The product of collection is scattered in deionized water with being ultrasonically treated, and obtains platinum nano microcrystalline dispersion.The preparation method technique simple general-purpose, easy to operate, the reaction time is short and cost is cheap, and yield is up to more than 95%, saves raw material, and whole preparation process is green, non-toxic substance and any pollution problem is not present.
Description
Technical field
The present invention relates to field of nanometer technology, more particularly to a kind of preparation method of platinum nano microcrystalline dispersion.
Background technology
The size of platinum nano microcrystalline about can be used as " seed " nucleus, prepare a wide range of grain in 3 ~ 5nm or so, nano microcrystalline
The monodispersed metal nanoparticle with phase or multiphase in footpath；Platinum nano microcrystalline is different from block because quantum size effect has
New electricity, optics, magnetics and the chemical property of material and single atom or molecule, optics, electronics, magnetics device can be prepared
Part, applied to photoelectron material, single electron tunnel, VHD magnetic storage material, tunnel magneto device, magnetic fluid material, have
The fields such as the effective catalyst in the synthetic reactions such as catalysis, nanotube or the nano wire of machine reaction.
The synthetic method of metal nano material generally includes two kinds：Method from top to bottom（Nano material is prepared by block materials）
Method from the bottom to top（Nano material is grown to by the precursor liquid of molecule or atom）.From top to bottom method includes sputtering method, metal steam
The technologies such as hair method, ultraviolet, electron/ion beams and X-ray lithography erosion, but the particle size uniformity of product is poor, and instrument and equipment is expensive, throws
Money is high, requires high to the technical quality of staff.And relatively flexible method from the bottom to top refers to mainly based on liquid phase method
In homogeneous phase solution containing soluble-salt, trigger chemistry anti-using the various approach such as reducing agent, heat resolve, phonochemistry method are added
Should, grown by homogeneous or heterogeneous nucleation and subsequent diffusion, generate definite shape and size, the homogeneous nanometer of scale particle size
Particle.Solution-phase synthesis of metal nanoparticles is widely studied in the 1980s, and liquid phase method can better control over
The shape of nano-particle, particle diameter, it is particularly suitable for the preparation of single dispersion metal nanometer particles and its colloid.High-temperature liquid-phase decomposition method,
Hydro-thermal method, chemical vapour deposition technique, liquid-liquid two phase process, reverse micelle method and sonochemistry method etc. belong to liquid phase synthesis
Method.Wherein, high-temperature decomposition is to decompose presoma at high temperature；Hydro-thermal method is a kind of water-soluble from supersaturation at high temperature under high pressure
The method crystallized in liquid；Chemical vapour deposition technique is to bring presoma in reactor with gas into, anti-in high temperature substrate
Crystal should be decomposed to form.These three methods can obtain purity height, the nano-particle of size tunable, but preparation technology is relative
Complexity, costly, length, complex steps, wasted raw material, added production cost equipment experimental period.Liquid-liquid two phase process and anti-
Phase micelle assay is all reacted at ambient temperature, but needs the longer reaction time, and sonochemistry method cost is relative
It is relatively low, it is not necessary to high-temperature and high-pressure conditions, reaction condition are easily realized, and the reaction time is short, and the nano microcrystalline quality of preparation is high, point
Scattered stability is good, and yield is up to more than 95%, saves raw material, and the yield compared to other preparation methods greatly improves, and has general
Property, the advantages that workable and method is relatively easy.
The present invention prepares platinum nano microcrystalline dispersion using sonochemistry method.In ultrasonic field, due to ultrasonic cavitation
The extremely special physical environment of localized hyperthermia's high pressure is produced, accelerates chemical reaction.Ultrasonic cavitation is formed for nucleus and provided
Required energy, pt atom agglomerate into unbodied platinum nano microcrystalline, the formation speed of nucleus is improved several orders of magnitude, brilliant
The raising of core synthesis speed inhibits growing up for nucleus, reduces crystal particle diameter, and cavitation processes prevent platinum nano microcrystalline
The reunion of particle simultaneously forms stable nano-particle.
The content of the invention
The mesh of the present invention is to provide a kind of preparation method of platinum nano microcrystalline dispersion, for being asked existing for prior art
Topic, and provide that a kind of preparation method is simple, the preparation of the easily controllable platinum nano microcrystalline of course of reaction and its colloidal dispersion system
Method.
The purpose of the present invention can be achieved through the following technical solutions：Under Ultrasonic Conditions, in 50 ~ 70 DEG C of condition
Under, it is 1 ~ 4 to add platinum precursor solution in past reactor and adjust its pH value, then reducing agent is disposably added rapidly, when anti-
Reaction is completed when answering the color of solution to become brown by transparent yellowish-brown, then becoming opaque black, is then centrifuged for separating
Supernatant is discarded, is then continuously washed, centrifuged with deionized water, at least three times, the product of collection is dispersed in deionization for circulation
Ultrasonication is used in water, obtains platinum nano microcrystalline colloidal dispersion system.
Platinum precursor solution of the present invention is chloroplatinic acid, potassium chloroplatinate, ammonium chloroplatinite, acetylacetone,2,4-pentanedione Asia platinum, chlorine Asia
The mixing that any or two or more materials are mixed to get in any proportion in sodium platinate, potassium chloroplatinite, Ma Gelusi salt
Solution, the concentration of platinum ion is 0.01 ~ 0.02mol/L in described platinum presoma.
Reducing agent of the present invention is a kind of in hydrazine hydrochloride, ascorbic acid, sodium citrate, Verdoflavin.
Preferably, the concentration of the hydrazine hydrochloride in reducing solution of the present invention is 0.001 ~ 0.004mol/L, wherein salt
The mol ratio of sour hydrazine and platinum ion in platinum precursor solution is 0.1:1~0.4:1.
Preferably, the concentration of the ascorbic acid in reducing solution of the present invention is 0.10 ~ 0.25mol/L, and its moderate resistance is bad
The mol ratio of hematic acid and platinum ion in platinum precursor solution is 5:1~10:1.
Preferably, the concentration of the sodium citrate in reducing solution of the present invention is 0.15 ~ 0.40mol/L, wherein lemon
The mol ratio of sour sodium and platinum ion in platinum precursor solution is 15:1~25:1.
Preferably, the concentration of the Verdoflavin in reducing solution of the present invention is 0.60 ~ 0.90mol/L, wherein tieing up him
The mol ratio for ordering B2 and platinum ion in platinum precursor solution is 30:1~45:1.
Preferably, the pH value of solution of the present invention is adjusted with commercially available hydrochloric acid (AR).
Preferably, the reaction time of the present invention is 2 ~ 15min.
Beneficial effects of the present invention are：
（1）Any dispersant need not be added in the present invention, due to having selected suitable platinum ion concentration, reaction temperature
Degree, suitable reducing agent and reductant concentration, under the conditions of existing for ultrasound field, it is anti-to carry out sonochemistry liquid-phase reduction
Should, the particle diameter of obtained platinum crystallite is 3 ~ 5nm, soilless sticking, and the yield of platinum powder reaches more than 95%.
（2）The method cost of the present invention is low, can just be completed with easy experiment equipment at normal temperatures and pressures, and energy consumption is low,
The purity of product is high, and yield is high, and platinum powder good dispersion, specific surface area is big, in photocatalysis, magnetic memory materials, chemical catalysis material
Application aspect has greater activity.
In summary, the present invention need not add any dispersant, scattered by selecting suitable reducing agent to prepare
Platinum nano microcrystalline, and narrow particle size distribution, uniformity are high；The inventive method yield is up to more than 95%, and experimental facilities is simple, instead
Mild condition is answered, platinum nano microcrystalline controllability is strong, and the platinum powder particle size range of preparation is can be controlled between 3nm ~ 5nm, it is not necessary to high
The harsh experiment condition such as warm high pressure, reaction time is very short, is adapted to batch production；Platinum nano microcrystalline prepared by this method has
Purity is high, and crystallite particle diameter controllability is strong, uniformly dispersed good, the characteristics such as specific surface area is big, application be related to photoelectron material,
Single electron tunnel, VHD magnetic storage material, tunnel magneto device, magnetic fluid material, the catalysis of organic reaction, nanotube or
The fields such as the effective catalyst in the synthetic reactions such as nano wire.
Brief description of the drawings
Fig. 1 is the transmission electron microscope picture of platinum nano microcrystalline prepared by embodiment 1；
Fig. 2 is the transmission electron microscope picture of platinum nano microcrystalline prepared by embodiment 2；
Fig. 3 is the transmission electron microscope picture of platinum nano microcrystalline prepared by embodiment 3；
Fig. 4 is the transmission electron microscope picture of platinum nano microcrystalline prepared by embodiment 4；
Fig. 5 is the EDS energy spectrum diagrams of the platinum nano microcrystalline sample on transmission electron microscope copper mesh；
Fig. 6 is the X ray diffracting spectrum of platinum nano microcrystalline powder.
Embodiment
Below by the drawings and specific embodiments, the invention will be further described, but is not meant to protect the present invention
Protect the limitation of scope.
Embodiment 1
The preparation method of platinum nano microcrystalline dispersion, specifically includes following steps described in the present embodiment：
（1）The preparation of platinum precursor solution：The aqueous solution for the potassium chloroplatinate that the concentration for preparing platinum ion is 0.02mol/L；
（2）The preparation of reductant solution：The aqueous solution of 0.7mol/L Verdoflavins is prepared as reducing agent；
（3）The preparation of platinum nano microcrystalline dispersion：Any dispersant need not be added, in ultrasonic wave（Working frequency 40
kHz）Under the conditions of, under conditions of 55 DEG C, toward adding platinum precursor solution in reactor and with commercially available hydrochloric acid（AR）Adjust it
PH value is 2, then disposably adds reducing agent rapidly（The mol ratio of Verdoflavin and platinum ion in platinum precursor solution is 40:
1）, when the color of reaction solution becomes brown by transparent yellowish-brown, then reaction is completed when becoming opaque black（Reaction
5min）, it is then centrifuged for separation and discards supernatant, then continuously washed, centrifuged with deionized water, circulation at least three times, is collected
Product it is scattered use ultrasonication in deionized water, obtain platinum nano microcrystalline colloidal dispersion system.
Platinum nano microcrystalline favorable dispersibility manufactured in the present embodiment, average grain diameter 5nm, soilless sticking, transmission electron microscope, such as schemes
Shown in 1.
Embodiment 2
The preparation method of platinum nano microcrystalline dispersion, specifically includes following steps described in the present embodiment：
（1）The preparation of platinum precursor solution：The aqueous solution for the chloroplatinic acid that the concentration for preparing platinum ion is 0.01mol/L；
（2）The preparation of reductant solution：The aqueous solution of 0.1mol/L ascorbic acid is prepared as reducing agent；
（3）The preparation of platinum nano microcrystalline and its colloidal dispersion system：Any dispersant need not be added, in ultrasonic wave（Work
The kHz of frequency 40）Under the conditions of, under conditions of 55 DEG C, adjusted toward the interior addition platinum precursor solution of reactor and with commercially available hydrochloric acid
Its pH value is 3, then disposably adds reducing agent rapidly（The mol ratio of ascorbic acid and platinum ion in platinum precursor solution is 6:
1）, when the color of reaction solution becomes brown by transparent yellowish-brown, then reaction is completed when becoming opaque black（Reaction
3min）, be then centrifuged for separate (being centrifuged 10 minutes under 1200r) discard supernatant, then continuously washed with deionized water, from
The heart, at least three times, the product of collection is scattered to use ultrasonication in deionized water, obtains platinum nano microcrystalline colloidal dispersions for circulation
System.
Platinum nano microcrystalline favorable dispersibility manufactured in the present embodiment, average grain diameter 3nm, soilless sticking, transmission electron microscope, such as schemes
Shown in 2.
Embodiment 3
The preparation method of platinum nano microcrystalline dispersion, specifically includes following steps described in the present embodiment：
（1）The preparation of platinum precursor solution：Prepare the sodium chloroplatinite and chlorine Asia platinum that platinum ion total concentration is 0.01mol/L
The mixed aqueous solution of sour potassium；
（2）The preparation of reductant solution：The aqueous solution of 0.2mol/L sodium citrates is prepared as reducing agent；
（3）The preparation of platinum nano microcrystalline and its colloidal dispersion system：Any dispersant need not be added, in ultrasonic wave（Work
The kHz of frequency 40）Under the conditions of, under conditions of 60 DEG C, adjusted toward the interior addition platinum precursor solution of reactor and with commercially available hydrochloric acid
Its pH value is 4, then disposably adds reducing agent rapidly（The mol ratio of sodium citrate and platinum ion in platinum precursor solution is
18:1）, when the color of reaction solution becomes brown by transparent yellowish-brown, then reaction is completed when becoming opaque black（Instead
Answer 10min）, it is then centrifuged for separation (being centrifuged 10 minutes under 1200r) and discards supernatant, is then continuously washed with deionized water
Wash, centrifuge, at least three times, the product of collection is scattered to use ultrasonication in deionized water, obtains platinum nano microcrystalline glue for circulation
Body dispersion.
Platinum nano microcrystalline favorable dispersibility manufactured in the present embodiment, and spherical in shape, average grain diameter 3nm, soilless sticking.Such as Fig. 3
It is shown.
Embodiment 4
The preparation method of platinum nano microcrystalline dispersion, specifically includes following steps described in the present embodiment：
（1）The preparation of platinum precursor solution：The concentration for preparing platinum ion is the water-soluble of 0.01mol/L acetylacetone,2,4-pentanedione Asia platinum
Liquid；
（2）The preparation of reductant solution：The aqueous solution of 0.8mol/L Verdoflavins is prepared as reducing agent；
（3）The preparation of platinum nano microcrystalline dispersion：Any dispersant need not be added, in ultrasonic wave（Working frequency 40
kHz）Under the conditions of, under conditions of 65 DEG C, toward the interior addition platinum precursor solution of reactor and adjust its pH value with commercially available hydrochloric acid
For 3, then reducing agent is disposably added rapidly（The mol ratio of Verdoflavin and platinum ion in platinum precursor solution is 35:1）, when
The color of reaction solution becomes brown by transparent yellowish-brown, then becomes reaction completion during opaque black（React 10min）,
It is then centrifuged for separation (being centrifuged 10 minutes under 1200r) and discards supernatant, is then continuously washed, centrifuged with deionized water, followed
At least three times, the product of collection is scattered to use ultrasonication to ring in deionized water, obtains platinum nano microcrystalline colloidal dispersion system.
Platinum nano microcrystalline favorable dispersibility manufactured in the present embodiment, average grain diameter 4nm, soilless sticking.
Embodiment 5
The preparation method of platinum nano microcrystalline dispersion, specifically includes following steps described in the present embodiment：
（1）The preparation of platinum precursor solution：The concentration for preparing platinum ion is the water-soluble of 0.015mol/L sodium chloroplatinite
Liquid；
（2）The preparation of reductant solution：The aqueous solution of 0.23mol/L ascorbic acid is prepared as reducing agent；
（3）The preparation of platinum nano microcrystalline and its colloidal dispersion system：Any dispersant need not be added, in ultrasonic wave（Work
The kHz of frequency 40）Under the conditions of, under conditions of 55 DEG C, adjusted toward the interior addition platinum precursor solution of reactor and with commercially available hydrochloric acid
Its pH value is 2, then disposably adds reducing agent rapidly（The mol ratio of ascorbic acid and platinum ion in platinum precursor solution is 9:
1）, when the color of reaction solution becomes brown by transparent yellowish-brown, then reaction is completed when becoming opaque black（Reaction
10min）, it is then centrifuged for separation (being centrifuged 10 minutes under 1200r) and discards supernatant, then continuously washed with deionized water,
Centrifugation, at least three times, the product of collection is scattered to use ultrasonication in deionized water, obtains platinum nano microcrystalline colloid point for circulation
Granular media system.
Platinum nano microcrystalline favorable dispersibility manufactured in the present embodiment, average grain diameter 3nm, soilless sticking.
Embodiment 6
The preparation method of platinum nano microcrystalline dispersion, specifically includes following steps described in the present embodiment：
（1）The preparation of platinum precursor solution：The concentration for preparing platinum ion is the water-soluble of 0.01mol/L potassium chloroplatinite
Liquid；
（2）The preparation of reductant solution：The aqueous solution of 0.4mol/L sodium citrates is prepared as reducing agent；
（3）The preparation of platinum nano microcrystalline and its colloidal dispersion system：Any dispersant need not be added, in ultrasonic wave（Work
The kHz of frequency 40）Under the conditions of, under conditions of 65 DEG C, adjusted toward the interior addition platinum precursor solution of reactor and with commercially available hydrochloric acid
Its pH value is 1, then disposably adds reducing agent rapidly（The mol ratio of sodium citrate and platinum ion in platinum precursor solution is
22:1）, when the color of reaction solution becomes brown by transparent yellowish-brown, then reaction is completed when becoming opaque black（Instead
Answer 15min）, it is then centrifuged for separation (being centrifuged 10 minutes under 1200r) and discards supernatant, is then continuously washed with deionized water
Wash, centrifuge, at least three times, the product of collection is scattered to use ultrasonication in deionized water, obtains platinum nano microcrystalline glue for circulation
Body dispersion.
Platinum nano microcrystalline favorable dispersibility manufactured in the present embodiment, average grain diameter 4nm, soilless sticking.
Embodiment 7
The preparation method of platinum nano microcrystalline dispersion, specifically includes following steps described in the present embodiment：
（1）The preparation of platinum precursor solution：The concentration for preparing platinum ion is the water-soluble of 0.01mol/L Ma Gelusi salt
Liquid；
（2）The preparation of reductant solution：The aqueous solution of 0.4mol/L hydrazine hydrochlorides is prepared as reducing agent；
（3）The preparation of platinum nano microcrystalline and its colloidal dispersion system：Any dispersant need not be added, in ultrasonic wave（Work
The kHz of frequency 40）Under the conditions of, under conditions of 65 DEG C, adjusted toward the interior addition platinum precursor solution of reactor and with commercially available hydrochloric acid
Its pH value is 1, then disposably adds reducing agent rapidly（The mol ratio of hydrazine hydrochloride and platinum ion in platinum precursor solution is
0.2:1）, when the color of reaction solution becomes brown by transparent yellowish-brown, then reaction is completed when becoming opaque black（Instead
Answer 15min）, it is then centrifuged for separation (being centrifuged 10 minutes under 1200r) and discards supernatant, is then continuously washed with deionized water
Wash, centrifuge, at least three times, the product of collection is scattered to use ultrasonication in deionized water, obtains platinum nano microcrystalline glue for circulation
Body dispersion.
Platinum nano microcrystalline favorable dispersibility manufactured in the present embodiment, average grain diameter 4.5nm, soilless sticking.
Claims (1)
1. a kind of preparation method of platinum nano microcrystalline dispersion, it is characterised in that comprise the following steps：In Ultrasonic Conditions
Under, under conditions of 50 ~ 70 DEG C, it is 1 ~ 4 to add platinum precursor solution in past reactor and adjust its pH value, then rapidly once
Property adds reducing agent, when the color of reaction solution becomes brown by transparent yellowish-brown, then becomes to react during opaque black
Complete, be then centrifuged for separation and discard supernatant, then continuously washed, centrifuged with deionized water, circulate at least three times, collection
Product is scattered to use ultrasonication in deionized water, obtains platinum nano microcrystalline colloidal dispersion system；
The reducing agent is a kind of in hydrazine hydrochloride, ascorbic acid, sodium citrate, Verdoflavin；
The platinum precursor solution is chloroplatinic acid, potassium chloroplatinate, ammonium chloroplatinite, acetylacetone,2,4-pentanedione Asia platinum, sodium chloroplatinite, chlorine Asia
The mixed solution that any or two or more materials are mixed to get in any proportion in potassium platinate, Ma Gelusi salt, it is described
The concentration of platinum ion is 0.01 ~ 0.02mol/L in platinum presoma；
When reducing agent is hydrazine hydrochloride, the concentration of the hydrazine hydrochloride in reducing solution is 0.001 ~ 0.004mol/L, wherein hydrochloric acid
The mol ratio of hydrazine and platinum ion in platinum precursor solution is 0.1:1~0.4:1；
When reducing agent is ascorbic acid, the concentration of the ascorbic acid in reducing solution is 0.10 ~ 0.25mol/L, wherein Vitamin C
The mol ratio of acid and platinum ion in platinum precursor solution is 5:1~10:1；
When reducing agent is sodium citrate, the concentration of the sodium citrate in reducing solution is 0.15 ~ 0.40mol/L, wherein citric acid
The mol ratio of sodium and platinum ion in platinum precursor solution is 15:1~25:1；
When reducing agent is Verdoflavin, the concentration of the Verdoflavin in reducing solution is 0.60 ~ 0.90mol/L, wherein vitamin
The mol ratio of B2 and platinum ion in platinum precursor solution is 30:1~45:1；
The commercially available hydrochloric acid of the pH value of solution（AR）Regulation；
Reaction time is 2 ~ 15min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504507.5A CN105127441B (en) | 2015-08-18 | 2015-08-18 | A kind of preparation method of platinum nano microcrystalline dispersion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504507.5A CN105127441B (en) | 2015-08-18 | 2015-08-18 | A kind of preparation method of platinum nano microcrystalline dispersion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105127441A CN105127441A (en) | 2015-12-09 |
| CN105127441B true CN105127441B (en) | 2017-11-10 |
Family
ID=54713193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510504507.5A Active CN105127441B (en) | 2015-08-18 | 2015-08-18 | A kind of preparation method of platinum nano microcrystalline dispersion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105127441B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478794A (en) * | 2015-12-11 | 2016-04-13 | 中国科学院深圳先进技术研究院 | Platinum-copper alloy nano particle and preparation method thereof |
| CN109732100A (en) * | 2019-03-11 | 2019-05-10 | 昆明理工大学 | A kind of preparation method of the dendritic Pt nanoparticle of small size |
| CN111318721B (en) * | 2020-03-19 | 2022-04-15 | 四川省疾病预防控制中心 | Preparation method of platinum nano-chain |
| CN112692274A (en) * | 2020-12-21 | 2021-04-23 | 有研亿金新材料有限公司 | Preparation method and application of high-dispersity ultrafine platinum powder |
| CN113134623B (en) * | 2021-04-28 | 2022-06-03 | 西北工业大学 | Water-soluble amorphous noble metal nano particle and preparation method thereof |
| CN114378298B (en) * | 2021-12-21 | 2024-04-02 | 上海铂生金属材料有限公司 | Preparation method of superfine platinum powder |
| CN115194171B (en) * | 2022-05-27 | 2023-09-26 | 氢电中科（广州）新能源设备有限公司 | Highly dispersed platinum nanoparticle solution and preparation method thereof |
| CN115365509B (en) * | 2022-08-19 | 2023-12-22 | 中钢集团南京新材料研究院有限公司 | Preparation method of platinum nanocrystalline, platinum nanocrystalline and catalyst |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6346136B1 (en) * | 2000-03-31 | 2002-02-12 | Ping Chen | Process for forming metal nanoparticles and fibers |
| US7348365B2 (en) * | 2001-04-30 | 2008-03-25 | Postech Foundation | Colloid solution of metal nanoparticles, metal-polymer nanocomposites and methods for preparation thereof |
| CN101214554A (en) * | 2008-01-16 | 2008-07-09 | 上海第二工业大学 | One-step method preparing nano copper colloid water solution under ultrasonic field |
| CN101269417A (en) * | 2008-05-08 | 2008-09-24 | 郴州高鑫铂业有限公司 | Method for manufacturing nano-platinum powder |
| CN102672196B (en) * | 2012-05-15 | 2014-12-24 | 大连理工大学 | Method for preparing metal colloid at normal temperature |
| CN103084582B (en) * | 2013-01-08 | 2016-04-27 | 江苏大学 | A kind of method preparing atomic scale noble metal nano particles stable colloid suspension |
| CN104550999B (en) * | 2014-12-19 | 2017-04-19 | 昆明珀玺金属材料有限公司 | Method for preparing dispersive submicron honeycomb-shaped spherical platinum powder |
-
2015
- 2015-08-18 CN CN201510504507.5A patent/CN105127441B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105127441A (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105127441B (en) | A kind of preparation method of platinum nano microcrystalline dispersion | |
| Konar et al. | Shape-dependent catalytic activity of CuO nanostructures | |
| Sun | Controlled synthesis of colloidal silver nanoparticles in organic solutions: empirical rules for nucleation engineering | |
| Meshram et al. | Facile synthesis of CuO nanomorphs and their morphology dependent sunlight driven photocatalytic properties | |
| Kuo et al. | Morphologically controlled synthesis of Cu2O nanocrystals and their properties | |
| Kuo et al. | Seed‐mediated synthesis of monodispersed Cu2O nanocubes with five different size ranges from 40 to 420 nm | |
| Soofivand et al. | Silver chromate and silver dichromate nanostructures: sonochemical synthesis, characterization, and photocatalytic properties | |
| Chung et al. | Seed‐Mediated and Iodide‐Assisted Synthesis of Gold Nanocrystals with Systematic Shape Evolution from Rhombic Dodecahedral to Octahedral Structures | |
| Tsuji et al. | Epitaxial growth of Au@ Ni core− shell nanocrystals prepared using a two-step reduction method | |
| Li et al. | Fast synthesis of CuS and Cu9S5 microcrystal using subcritical and supercritical methanol and their application in photocatalytic degradation of dye in water | |
| Zhai et al. | Superparamagnetic plasmonic nanohybrids: shape-controlled synthesis, TEM-induced structure evolution, and efficient sunlight-driven inactivation of bacteria | |
| Huang et al. | Achieving polyhedral nanocrystal growth with systematic shape control | |
| Zhang et al. | Facile hydrothermal synthesis and photocatalytic activity of rod-like nanosized silver tungstate | |
| Lu et al. | Preparation and efficient visible light-induced photocatalytic activity of m-BiVO4 with different morphologies | |
| Jiang et al. | Facile route to silver submicron-sized particles and their catalytic activity towards 4-nitrophenol reduction | |
| Xu et al. | α-Fe 2 O 3 hollow structures: formation of single crystalline thin shells | |
| Zhang et al. | Synthesis of size-controlled monodisperse Pd nanoparticles via a non-aqueous seed-mediated growth | |
| Yang et al. | Microwave hydrothermal disassembly for evolution from CuO dendrites to nanosheets and their applications in catalysis and photo-catalysis | |
| Peng et al. | Construction of (001) facets exposed ZnO nanosheets on magnetically driven cilia film for highly active photocatalysis | |
| Liu | Cu 2 O microcrystals: a versatile class of self-templates for the synthesis of porous Au nanocages with various morphologies | |
| Li et al. | Synthesis of octahedral and cubic Cu 2 O microcrystals in sub-and super-critical methanol and their photocatalytic performance | |
| Ouyang et al. | Shape controlled synthesis and optical properties of Cu2O micro-spheres and octahedrons | |
| Wang et al. | Controllable synthesis of metastable γ-Bi2O3 architectures and optical properties | |
| Aguilar et al. | Facile synthesis of Cu2O particles with different morphologies | |
| Li et al. | Reduced graphene oxide supported platinum nanocubes composites: One-pot hydrothermal synthesis and enhanced catalytic activity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |